Facies Structure and Quantitative Parameters of the Pleistocene Sediments of the Cordilleran Submarine Margin.

Abstract—The lithological-facies zonality of the Neo- and Eopleistocene sediments from two main areas of the Cordilleran submarine margin is described for the first time. Processing of corresponding maps and isopach schemes using A.B. Ronov's volumetric method made it possible to calculate the quantitative parameters of sedimentation for the distinguished types of Pleistocene sediments. Terrigenous sedimentation predominated and was intensified during the Pleistocene. The accumulation of biogenic opal and carbonates was more intense in the Neopleistocene than in the Eopleistocene. [ABSTRACT FROM AUTHOR]